# Specifications

## Umbrella specification:

• CellML Umbrella 1.0. The CellML MIME-type, application/cellml+xml, is defined using the CellML Umbrella Specification.

## Appendices

If you find a problem with a specification, or want to suggest an enhancement, you may submit it to the Physiome tracker. Please also explain your case for the change to the cellml-discussion mailing list, and reference your tracker item.